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Senior Full Stack Developer (M/F)
About Numendo
Numendo is a consulting firm specializing in omnichannel strategies, supporting companies in the design and integration of digital solutions built to deliver a seamless, unified customer experience.
Our role: harmoniously orchestrate data, user journeys, and systems to create consistent, high-performing architectures. Thanks to our dual business and technical expertise, we help our clients conceptualize, prototype, and scale their web and mobile applications, serving simple, efficient, and connected user journeys.
Joining Numendo as a Full Stack Developer, means becoming part of a human-sized team where innovation, impact, and collaboration are at the heart of every mission.
Your role: imagine, build, evolve
As an Experienced / Senior Full Stack Developer, you will work within the digital teams of one of our key account clients. You will serve as a technical pillar and a key partner in driving project success.
Your missions as a Full Stack Developer:
- Design and develop all front-end and back-end features for web applications, with a constant focus on performance and quality;
- Ensure adherence to development standards, best practices, and industry benchmarks;
- Contribute to writing and evolving technical documentation;
- Provide application maintenance and bring your expertise to technical support;
- Drive a continuous improvement dynamic within the team;
- Guarantee code quality (reviews, pair programming, standards);
- Develop and maintain unit and functional tests to secure deliverables.
Your technical expertise
You are comfortable in varied technical environments and enjoy working across different stacks.
- DevOps / Ops skills are a plus
- Back-end Languages: PHP, Java
- Front-end Languages: HTML, CSS, JavaScript, TypeScript
- Databases: SQL, NoSQL
- Caching: Redis, Varnish
- Back-end Frameworks: Symfony, Laravel, Spring, Hibernate
- Front-end Frameworks: Vue.js, React, Angular
- CMS: WordPress, Magento, PrestaShop, Shopify
- Methodologies: Agile (Scrum, Scrumban, Kanban)
- Monitoring: ELK, Prometheus, Grafana
- CI/CD: GitLab CI, Jenkins, Azure DevOps
Time for Code and Impact!
Join a team where elegant code meets complex architectural challenges. Share your preferred stack and let’s shape what’s next together.
Your profile
Beyond technical skills, we are looking for a mindset that is:
- Curious and creative, loving to experiment and learn;
- Rigorous, with strong analytical skills;
- Proactive, capable of challenging ideas and bringing fresh ones to the table;
- Collaborative, thriving on building together with others.
At Numendo, personality matters just as much as technical skills!
Why join us?
Because you want to:
- Join a human-sized, dynamic, and caring company;
- Work on stimulating projects for key corporate accounts across various sectors;
- Grow in an environment where your voice counts and where you can genuinely influence technical choices;
- Take part in our internal NumEvents and Meetups, special moments for exchange and sharing among colleagues;
- Join a CSR-committed company, awarded the Ecovadis Silver label for the 3rd consecutive year.
Perks & benefits for employees
- Meal vouchers (50%+ company contribution)
- RoadMate card to support sustainable mobility
- Active Works Council (CSE) + “Place des salariés” benefits platform
Key details
- Full-time permanent contract (CDI)
- Position open in Paris, Mulhouse, or Geneva
- Tailored onboarding and ongoing HR & Tech support throughout your career
Additional information
The position in Geneva is open to EU citizens.
This position is open to all applicants without distinction and is accessible to people with disabilities.
The use of the masculine gender is intended solely to streamline reading and carries no discriminatory intent.
Our work
Curious about our tech stack and architectural choices? Discover how we transform complex challenges into scalable, high-performing solutions through our technical case studies.
Our values
Joining Numendo means entering a team that puts technical excellence at the service of sustainable impact. Here, continuous learning and autonomy are the pillars of our day-to-day production.
